can anybody teach me Unwrap_UVW LSCMSolve ? thankyou

Hi I want to write a small function to add a modifier to an object , and do a quick pelt to it. because I have many objects, so I want to do it in script. but face this problem here.

for obj in selection do
(

convertToPoly obj
addModifier obj (Unwrap_UVW())
obj.modifiers[#Unwrap_UVW].LSCMSolve()
)

add modifier successfully, but don't do quickpelt function like I press quickpeel in Unwrap_UVW modifier panel.

thankyou very much!